we are tyco integrated security. and we are sharper. . >>> proponents of new background checks on gun buyers are vowing to fight on this morning after the expected and nonetheless stinging defeat in the senate yesterday. that bipartisan compromise to expand background checks failed to get the 60 votes needed to move the legislation forward. only four republicans broke ranks with their party and voted for the measure. four democrats from pro-gun states voted against. the defeat sparked an angry outburst from the survivor of the tucson massacre. >> shamin you! >> there will be order in the senate. >> at the white house a fuming president obama surrounded by newtown families and former congresswoman gabby gifford lashed out at lawmakers and vowed to fight on. >> this was a pretty shameful day for washington. this effort is not over. i want to make it clear to the american people we can still bring about meaningful changes that reduce gun violence so long as the american people don't give up on it. >> i want to bring in